Device specific topic that we want to subsrcibe to, to get the status of the device (this should be available in the manual of the device). Topic typically looks like: example/topic/light1
with topics, we can use wild charts (*,#) for example;
if we want to subscribe to all lights in a room we can use: example/*/light
if we want to subscribe to the first floor we can use: example/topic/#
QoS : depending on the quality of the communication we can switch between values;
Subsribe; once topic, QoS settings are set, we can enable subscribe, which will make client subscribe to the set topic.
Parser type: depending on the device, we set correct parser type so we get the correct information from the device.
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